Digital Commons Network^™

Study And Analysis Of Six Twentieth Century Wind Band Works, Rick Warren Wallace

Theses

This thesis presents a detailed study and analysis of six significant wind band works composed during the twentieth century, chosen for their prominence within the standard repertoire and their influence on the development of band literature. The selected works include Gustav Holst’s Second Suite in F for Military Band, Percy Grainger’s Colonial Song, Ralph Vaughan Williams’s Toccata Marziale, Norman Dello Joio’s Variants on a Medieval Tune, John Barnes Chance’s Variations on a Korean Folk Song, and Claude T. Smith’s Emphatic Variations.

Each chapter provides a historical background of the composer and the selected work, …

A Newsletter For Megasource, Robin Courtright

Theses

No abstract provided.

Abstract Of Thesis: Directions In Painting And Drawing, Jean E. Perrone

Theses

The Culminating Project for completion of graduate work for the Degree of Master of Art in the area of Studio Art consisted of an exhibition and a thesis.

The exhibition in the Hendren Gallery, March 22- April 3, 1987, presented thirty-two works of art completed during the course of my graduate studies, which represented the full spectrum of my body of work. The specific pieces I selected for the exhibition include still life and abstractions dealing primarily with non-geometric, organic forms. The range of media included drawings in graphite, pastel, and colored pencil, and watercolor paintings.

The accompanying thesis is …

Pygraph: A Graphic Front-End For The Paisley Executable Specification Language, Richard Willison

Theses

This project is an application software system providing a graphical interface to PAISLey. PAlSLey (Process Oriented. Applicative. Interpretable Specification Language) is an executable specification language developed at AT&T Bell Labs to model real-time systems. The interface provides the user with a tool to graphically depict a real-time system. The graphics package, called PyGraph, has been implemented on a Sun 3 in a multi-window environment. While developing a graphic, PyGraph generates a PAISLey specification template for the graphic image. The template is filled out by the user with assistance provided by PyGraph.

Application Of The Dram Software For The Dynamic Analysis Of A Linkage Mechanism, Deepak Namdeo Rode

Theses

The study provides the application of the DRAM software for the dynamic analysis of a linkage mechanism and presents a simplified version of the DRAM user manual. This user manual appears in appendix C. The linkage which is used for the dynamic analysis consists of three rigid couplers. Crank 2 of this mechanism is responsible for transferring motion to the other links. Kinematic and kinetic results by DRAM are compared with analytical results. Good agreement was observed. Since the DRAM user guide is not easy to understand, it was necessary to write a user-friendly guide. Several types of kinematic and …

Study Of The Graininess Models Using The Macintosh Computer, Apiwat Nutavej

Theses

This study attempts to develop a Macintosh program that is able to simulate the photographic graininess models, to perform a Fast Fourier Transform, to plot a three dimensional graph, and to display a digitized image. Because of these four integrated functions, the program could become a useful tool in imaging science. The potential advantages include ease of use and the visual interaction between computer and user. When comparing the simulation results among three density models and four granularity models of random dots used in this study, the answers are found to be in close agreement with the hypothetical equations, with …

A Report On Debugging Networked Real-Time Multi-Microprocessor Systems, Anandi Krishnamurthy

Theses

Software development in networked real-time multi-microprocessor control systems is made difficult by the real-time constraints and parallel processing inherent in such systems. Software development in general, and debugging, in particular, of networked real-time multi-microprocessor systems is discussed. A tool that is a part of a debugger for such a system is described. The tool runs on a workstation with a passive user-interface and provides high-level access to the control software. The commands supported by the tool are analyzed. The software architecture of the tool is documented using data flow diagrams, a dictionary, file formats and pseudo-code.

Uguru: A Natural Language Unix Consultant, John Hanson

Theses

UGURU is a natural language conversation program, implemented in Prolog, which can manage a wide knowledge base of facts about Unix. The range and wording of questions that it understands are based on surveys taken of students, mostly Unix beginners. UGURU is also designed to accept statements in English that can be added as facts to the knowledge base. Each fact is represented as a "binding set:" a verb-oriented semantic net with the characteristics of directed acyclic graphs. The main actions taken by UGURU are divided between two primary modules, a parser and a retriever. To produce a binding set …

Assessment Of Classical Database Models For Representing Solids, Julia L. Deal

Theses

Solid modeling is being explored as a method of representing three dimensional parts for mechanical design and manufacturing. This work analyzes the data storage requirements of the Boundary Representation and Constructive Solid Geometry methods of representing solid models. The ability of the database models (Hierarchical, Network, and Relational) to support solid modeling needs is evaluated. The goal is to determine the database model(s) best suited to store and manage the graphical data for solid model representat ions . Background information about mechanical engineering, graphics, and database models is presented. Entity-Relationship diagrams are used to define data requ irements .

A Comparative Study Of Four Major Knowledge Representation Techniques Used In Expert Systems With An Implementation In Prolog, Joann T. Hudgick

Theses

Knowledge representation is a central issue in Artifical Intelligence (AI) research. In order to solve the diverse and complex problems encountered, one needs both a large amount of knowledge and some mechanism for the management and skillful utilization of that knowledge. The basic problem in knowledge representation is the development of an adequate formalism to represent that knowledge. In this thesis I will discuss four of the major techniques for representing knowledge in expert systems: first order logic, production rules, semantic networks, and frames. Using Prolog as the implementation language, I will demonstrate that all of the above mentioned representation …

Animator: An Object-Oriented Approach, Stephen Kurtz

Theses

Object-oriented programming is presented as a paradigm for developing interactive systems for computer animation. Object types, evolved conceptually from graphics turtles, are implemented to provide the animator with familiar metaphors for the specification of motion in three-dimensional space. The intention is to create objects that can represent actors, cameras, and decor that the user can direct and animate in a relatively intuitive manner. Vector and turtle objects support the actors, which respond to messages to orient, accelerate and draw themselves on the screen. The MacApp object libraries are used to implement the standard Macintosh user interface and a unit is …

How A Printer's Marketing Strategy Affects Capital-Equipment Purchasing Decisions, Lisa S. Horwich

Theses

Marketing is a concept that is commonly believed to be the key to achieving organizational goals. This is accomplished through the determination of the needs and wants of potential customers and the deliverance of the product or service that meets this need more effectively and efficiently than any of the company's competitors.

The survey of San Francisco printers demonstrated that while the companies do employ persons in a marketing or pricing capacity, that these individuals do not play a significant role in capital equipment purchasing. Each phase in the procurement process was handled by top management almost exclusively.

The two …

A Domain Specific Expert System Tool For Building Photofinishing Process Diagnostic Systems, King Choi

Theses

The knowledge-based method is a new and useful technique to build computer systems for applications which are heuristic rather than algorithmic in nature. This paper discusses how the approach can be applied to photofinishing process diagnostics. A prototype system for diagnosing Process E-6 for Kodak Ektachrome films is built to understand the knowledge structure and inferencing criteria for photofinishing process. The experience gained from building the prototype Process E-6 diagnostic system has been applied to the design of an expert system tool for building photofinishing process diagnostic systems without the direct involvement of a knowledge engineer.

Fric: An Expert System To Recognize Fricatives, Karen A. Atkinson

Theses

In building a speaker independent continuous speech understanding sys tem, a method is needed to translate the speech signal to a phoneme string. Current recognition attempts based on statistical methods are not as accurate as desired and require vast numbers of templates for comparison. On the other hand, human experts can transcribe phoneme strings from spectrograms with a high degree of accuracy, without needing to match unidentified seg ments against identified templates. This paper discusses the development of Fric, an expert system for identifying fricative phonemes, intended to func tion as part of a phoneme identification knowledge source. Fric attempts …

Signature File Access Methodologies For Text Retrieval: A Literature Review With Additional Test Cases, Karen Caviglia

Theses

Signature files are extremely compressed versions of text files which can be used as access or index files to facilitate searching documents for text strings. These access files, or signatures, are generated by storing "hashed" codes for individual words. Given the possible generation of similar codes in the hashing or storing process, the primary concern in researching signature files is to determine the accuracy of retrieving information. Inaccuracy is always represented by the false signaling of the presence of a text string. Two suggested ways to alter false drop rates are: 1) to determine if either of the two methologies …

Development Of A Mathematical Model To Determine The Temperature Distribution In The Metal Layer And Hearth Of An Electrical Resistance Smelter, Kurt B. Carlson

Theses

A steady-state finite-difference heat transfer mathematical model was derived to determine the temperature distribution in the metal layer and the hearth of a cylindrical electrical-resistance smelter. The temperature distribution is required for the redesign of the refractory materials and their positions in the hearth to insure that the metal layer is kept molten at normal smelting temperatures and that mechanical and structural integrity of the hearth is maintained. An extensive literature search revealed that no previously defined model of this type existed and that consideration of a three-dimensional model was beyond the scope of this work. The literature search also …

Indirect Photometric Chromatography Of Iodide Ion In Aqueous Solutions, M. Liz Allyn

Theses

Indirect photometric chromatography was applied to the detection and quantification of iodide ion in aqueous solutions. A Nucleosil SB column containing the trimethylamine functional group was utilized in this HPLC study to compare the selectivity and reproducibility of copper (II) nitrate, trimesic acid, and phthalic acid eluents. Trimesic acid eluent was the strongest eluent, R.(I~)=3.5min, followed by phthalic acid, R.(I~")=14.6min, and copper nitrate, R. (I~)=15.5min, assuming optimum conditions. Both aromatic eluents were held onto the column by adsorption reactions with the styrene-divinylbenzene matrix of the resin. Irreversible column damage was the result. Coupled with the fact that the copper nitrate …

A Multipurpose Test Mask For Exposure Tool Characterization, Brian Benamati

Theses

Of the many facets of integrated circuit fabrication, photolithography may very well be the most important due to the number of levels required for the fabrication of sophisticated devices. Therefore it is imperative to understand the performance capabilities of an exposure tool and identify its inherent limitations. Many methods have been developed which concentrate specifically on evaluating resolution, critical dimensions or registration. Often test patterns exist which vary widely for applications with respect to steppers, IX scanning projection aligners and other IX exposure equipment. The following work is focused on the requirements of evaluating and optimizing all aspects of performance …

A Comparison Of The Collinear Mean And The Mean Sea Surface As Reference Levels For Altimeter Analysis In The Southern Pacific Ocean, Charles Beard

Theses

Satellites are used to study various oceanic phenomena, including sea surface temperature, color, and sea height variability (which is related to oceanic currents). In observing sea height variability from radar altimeters, three methods of analysis can be applied. They are the collinear or repeat track method, the cross-over difference method, and the mean sea surface method. All three are designed to remove the effects of geoid undulations from the altimeter records. This paper compares the collinear method with the mean sea surface method in a small geographic area. Both methods analyze the tracks of collinear altimeter data by subtracting a …

Countywide Police Simulation System Cops, Craig J. Mcdonald

Theses

COuntywide Police Simulation System (COPS) is a model which simulates the receipt of police, fire, and emergency medical calls at a public safety communications center, with subsequent dispatch of law enforcement officers to police events. The model examines the interaction of exogenous variables, including the type of call, the frequency of calls, the number of telecommunicators on duty, the number of police cars in service, the deployment pattern of the officers, the number of cars to be dispatched, and the dispatch plan. By modifying the values that these variables can hold, the distribution of workload among police officers can be …

On The Proposed Integrated Services Digital Network, Robert Johnson

Theses

The ultimate aim of this dissertation is neither to increase the state of the art in networking technology nor to predict the future structure of telecommunications networks. It is an attempt to raise the awareness of both the author and the reader as to the evolutionary forces driving vast changes in the telecommunications field. The impact of these changes will significantly alter the way we live and conduct business in the Information Age. For those involved with the communications field, the ability to make sound business decisions will require an in-depth knowledge of the technology and services that compose ISDN. …

An Introduction Of The Theory Of Nonlinear Error-Correcting Codes, Robert B. Nenno

Theses

Nonlinear error-correcting codes are the topic of this thesis. As a class of codes, it has been investigated far less than the class of linear error-correcting codes. While the latter have many practical advantages, it the former that contain the optimal error-correcting codes. In this project the theory (with illustrative examples) of currently known nonlinear codes is presented. Many definitions and theorems (often with their proofs) are presented thus providing the reader with the opportunity to experience the necessary level of mathematical rigor for good understanding of the subject. Also, the examples will give the reader the additional benefit of …

Integrated Voice/Data Through A Digital Pbx, Ian Schofield

Theses

The digital voice/data PBX is finally reaching its anticipated potential and becoming a major factor when considering the total communications picture for many businesses today. The digital PBX has always been the choice for voice communications but has lagged behind the LAN industry when it comes to data transfers. The pendulum has begun to swing with the enhanced data capabilities of third and fourth generation PBXs. The battle for the total communication market is quite fierce between the LAN and PBX vendors now. This research thesis looks at the history, evolution, and architecture of voice/data PBXs. It traces development of …

A Tool For Compiler Testing, Chung-Cho Oliver Cheng

Theses

A tool for compiler testing is implemented. The tool is driven by a BNF grammar extended by a device called control flags to incorporate those parts of a language that are not controlled by context-free rules (for instance, use of declared names). The tool produced two sets of program strings such that each production in the grammar is used at least once. One set is produced by Purdom's algorithm. The other is produced by a new algorithm designed by the author which builds a tree and then produces a set of strings from it for compiler testing. The program strings …

Teraphim: A Domain-Independent Framework For Constructing Blackboard-Controlled, Blackboard-Based Expert Systems In Prolog, Bruce Lyon

Theses

The blackboard architecture, in which a set of independent knowledge sources communicate by means of a global data base known as a blackboard, has been suggested as a generally useful design for knowledge-based systems. Teraphim is a domain-independent frame work for writing blackboard-based expert systems in Prolog. It implements concepts common to a range of previous blackboard architecture programs, such as HEARSAY-III and BB1. Teraphim includes as its basic elements a partitioned blackboard, a simple blackboard-controlled scheduler, a set of general-purpose scheduling heuristics to control the scheduler, a generic knowledge source with the ability to ask the user questions about …

Display Of Molecular Models With Interactive Computer Graphics, Steve Wuter Yang

Theses

Computer graphics devices offer a way to present images of three-dimensional objects with enough detail to aid human understanding of the structure of molecules. In this thesis, the Computer Aided Molecular Design system (CAMD system) will illustrate this idea. The CAMD system is an educational package designed for students in high school. The user of the CAMD system can create different molecules and store these molecules into a relational data base for future display. A Relational Data Base Management system was implicitly implemented for the CAMD system.

Investigation Of Steady Incompressible Flows In The Vicinity Of An Airfoil, Sivaraj Kailasapathy

Theses

O-type body-fitted coordinate systems are numerically generated about NACA0012 and NACA4412 airfoils. These coordinate systems are used to effect a coordinate transformation from the physical plane to a rectangular transformed plane. The software developed also has a coordinate contraction capability. Plots of uncontracted and contracted coordinate systems are presented.

The nonconservative, velocity-pressure formulation of the two-dimensional, steady-state Euler equations are transformed to the rectangular plane. The boundary conditions at the airfoil are determined by the source-panel method, following which, the explicit finite difference form of the transformed Euler equations are solved using a space-marching scheme. Non-lifting potential flow solutions are …

Adaptive Statistical Recognition Of Hand-Printed Telugu Characters, Murthy Lakshmana Mantha

Theses

A brief description of statistical and syntactic pattern matching techniques is presented with an emphasis on statistical techniques. The characteristics of the Telugu script are described. A subset of 16 characters, which are both easy and hard to recognize, is selected for the dictionary of standard characters. A weighted linear difference polynomial of features is used to recognize Telugu characters. The features were Fourier descriptors of projection profiles and cross sections taken in various directions. Algorithms for obtaining the projection profiles cross sections and adaptive learning method are presented. The system was trained and tested with a set of 8 …

The Ubiquitous B-Tree: Volume Ii, Sally E. Fischbeck

Theses

Major developments relating to the B-tree from early 1979 through the fall of 1986 are presented. This updates the well-known article, "The Ubiquitous B-Tree" by Douglas Comer (Computing Surveys, June 1979). After a basic overview of B and B⁺ trees, recent research is cited as well as descriptions of nine B-tree variants developed since Comer's article. The advantages and disadvantages of each variant over the basic B-tree are emphasized. Also included are a discussion of concurrency control issues in B-trees and a speculation on the future of B-trees.

Development Of A Photometric Primary Transfer Standard For Reflectance Goniospectrophotometry, Denis J. O. Daoust

Theses

Currently, photometric standards are calibrated only at CIE-recommended geometries. A need exists for calibrating at many combinations of illumination and viewing angles. The common practice is to assume BaSO₄ is lambertian although its non-Iambertian behavior is well-known. Accordingly, a study was undertaken to develop a standard for this type of metrology. Two diffuse materials, BaSO₄ and PTFE, were characterized goniospectrophotometrically. PTFE, when pressed to a density of 1.55g/cc against a lapping film, exhibited properties lending itself as a transfer standard. Bidirectional absolute spectral reflectance factors at 60 combinations of illumination and viewing angles in a single plane were …